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Integral asymmetric bi-soft segment poly (ester urethane urea) membranes are casted through a novel procedure where a reaction is introduced in the casting solutions preparation step of the phase inversion technique. Two reactive pre-polymers, the polypropylene oxide-based with three terminal isocyanate groups and the polycaprolactone diol with two terminal hydroxyl groups, are dissolved in a single...
Segmented polyurethane/urea membranes, containing two soft segments, poly(propylene oxide) and polydimethylsiloxane, were prepared by extending a polypropylene oxide-based tri-isocyanated prepolymer (PU) with polydimethylsiloxane bis(hydroxyalkyl) terminated (PDMS). PU/PDMS membranes were characterized by infrared spectroscopy (ATR-FTIR), differential scanning calorimetry (DSC), transmission electron...
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